Large axial vibration of the motor
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Our facility has a motor-driven fan (centrifugal type). The fan experiences vibration, but the temperature is normal. The motor has high axial vibration but low radial vibration. What could be the cause?
Check whether there are any issues with the motor bearings and their installation
This post was last edited by Zhongyuanren on 2016-8-10 at 15:04. Check the following: 1. Axial clearance of the fan, and whether there are any issues with the thrust bearings·； 2. Vibration value: Check the envelope value; if it is less than 6, there is no problem and operation can continue.
The problem lies in the alignment of the coupling; the motor is fine.
A coupling with elastic pin connectors is being used
Hello! The connection between the fan and the motor is achieved using elastic pin connectors; one end of these connectors is fixed to the drive wheel of the motor, while the other end is inserted into the drive wheel of the fan. There is a gap of about 10 mm between the two drive wheels. I’m not quite sure how any movement of the fan’s shaft could affect the motor – could you explain this?